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Variometer And Sliding Capacitor, by Marconi Company, London, Early 20th Century
Inventory Number: 44318
Date: Early 20th Century
Maker Details: Signed by Marconi's Wireless Telegraph Co. Ltd.
Inscription: "MARCONI'S WIRELESS / TELEGRAPH CO LTD / NO 73377 LONDON" on metal plaque on upper surface of base.
Size: 200 mm in length
Materials: Teak, copper, ebonite, nickel, steel.
Other Given Number(s): Christie's 183.
Notes:
Variometer And Sliding Capacitor, in varnished teak frame. Variometer in horizonral cylinder, wrapped in copper wire. With two nickel-plated terminals on top of cylinder, and copper knob on side. With two ebonite side panels mounted at a angle on frame, with sliding ebonite scale (scale 0-6) on one ebonite panel and four nickel-plated terminals on other ebonite panel. With sliding capacitor mounted on top of frame.
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